<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>2_元素阴影</title>
    <style>
        div{
            width: 300px;
            height: 100px;
            background-color: #62B5EC;
            border-radius: 50px;
            /*元素阴影:
            X轴偏移量 Y轴偏移量 羽化值 阴影扩展半径 阴影颜色*/
            box-shadow: 5px 5px 5px 5px gray;
        }
    </style>
</head>
<body>
<div></div>
</body>
</html>